Machinery for cutting logs



(No Model.) 2 SheetS-She,t 1

J .J HAYES;

MACHINERY FOR CUTTING LOGS.

No. 384,763. g PatentedJune 19, 1888 {I- PETERSv Pholtrlilbognphbr.Wnhillgbn. D.C.

2 Sheets-Sheet 2.

(No Model.)

J. J. HAYES.

MACHINERY FOR CUTTING LOGS.

No. 384,763. Patented June .19, 1888.

N. "was Pholn-Lhhngnpher. wnmn mnfn a UNITED STATES PATENT UFFICE.

MACHINERY FOR CUTTING LOGS.

SPECIFICATION forming part of Letters Patent No. 384,763, dated June 19,1888. Application filed April 14, 1887. Serial No. 234,755. (No model.)i

T at whom it may concern.-

much heavier than another.

My invention is intended for rendering the feed very steady andreliable, and for replacing the lower end of the feeding-trough next thecutter, when the same becomes worn, without changing or disturbing anyof the other parts, so that the wood cut will be of uniform thicknessand character.

In the drawings, Figure 1 is a plan view of the machine. Fig. 2 is aVertical section longitudinally of the feeding-trough. Fig. 3 is across-section at the line 00 50, Fig. 2. Fig. 4 is a cross-section atthe line 3/ y, Fig. 2; and

Fig. 5 is a cross-section at the line a 2, Fig. 2.

Fig. 6 is a plan view at the lower end of the feeding-trough. Fig. 7 isa section longitudinally of the trough at the lower end. Fig. 8 is adetached view of the nose-piece. Figs. 3 to 8, inclusive, are in largersize than Figs. 1 and 2.

The main frame A receives the j onrnal-boxes for the-horizontal shaft 0,one of which boxes is shown at B; and upon the shaft 0 is a head, 0,having knives or cutters placed therein at' an inclination, so as to cuttransverse shavings from the logwood or other log placed within theinclined trough D as the head 0 and knives are revolved. The frames,journal boxes, shaft-head, and knives are of any desired character, andare well known in this class of ma chinery.

The trough D is made with a bottom, 1, and sides 2, and in the innerfaces of the sides 2 are longitudinal grooves 3. The lower end of thistrough D rests upon a wedge-shaped bearing, D, and is bolted to the mainframe A, and the said trough D is at a proper inclination, and beneaththe upper end is a suitable sup porting-frame, E.

The vertical shaft F is driven by suitable gearing, G, and thebevel-wheels H connect the same to the screw'shaft I, supported inbearings 4 upon the frame E, and at the lower end of this shaft I is ascrew-pinion, K, above which is a raclebar, L, having teeth upon itsunder surface, with which the screw-pinion K gears, and at the lower endof the rack-bar L there is a head, 1?, having upon its face holdfastprojections 5, which by penetrating the rear end of the log prevent suchend of the log slipping upon the face of the head P. At each side ofthis head I? are rollers 6, that travel within the longitudinal grooves3 in the sides 2 of the trough, and these rollers 6 hold down the head Pand prevent the same from vibrating or quivering when the rotary cuttersare acting upon one end of the log and the head is moving and holdingthe other end of the log, and these rollers 6 also support the weight ofthe head and lessen friction.

The head I? and rack-bar L are made in one or permanently connectedtogether, and there are rollers or wheels M, the shafts of which aresupported in bearing-blocks within the trough D, which wheels supportthe rack-bar near the screw-pinion K,to lessen the friction caused bythe weight of the rack-bar, and the rollers N above the rack-bar serveto hold down such rack-bar and prevent any injury or separation betweenthe rack and the screw-pinion. The shafts of the rollers N are inhearings on the upper edges of the trough.

The screw-shaft I is inclined to a vertical plane passing longitudinallythrough the trough D, so that the worm or threads of the screw-pinionKlmay be nearly or quite at a right angle to the rack-bar L. Hence suchscrewpinion will act directly upon the teeth of the rack-bar, and nearlyat right angles to its length, so that the bevel-gears H will not be inthe way of the longitudinal movement of the rack-bar, and thisscrew-pinion exerts a powerful force in moving the rack-bar and headlongitudinally of the trough D, and there is no risk of the partsvibrating or trembling during the motion. Hence the out across the endof the wood is very uniform, and there is no risk ofinjuring anyportions ofthe machine.

The lower end of the trough adjacent to the cutters in machines of thiskind is liable to wear rounding, and the wood breaks away at the loweredges of the log instead of being cut ofl with uniformity. To overcomethis difficulty, I form a channel across the bottom 1 of the trough atits extreme lower end and adjacent to the cutter-head, and into thistransverse channel I insert a removable nose-piece, Q, having projectingends 8, as seen in Fig. 8, and in the sides 2 of the trough,near the bottom ends,are mortises 9,that are large enough to allow the nose-piece Qto he slipped endwise through said mortises and then to be broughtforward and dropped down into the transverse channel across the troughat the lower end of the bottom 1, and I insert into the mortises 9,above each projecting end 8 of the nose-piece Q, wedges 12, havingL-shaped ends, as seen in Figs. 8 and 6, and the screws or bolts 13passing through eyes in the L-shaped ends of the wedges serve to presssaid wedges into place above the ends 8 of the nose-piece Q, so as tohold the same down firmly upon the bottom of the trough. By the removalof these screws 13 and wedges 12 the nose-piece Q can be lifted andremoved whenever the edge thereof has become worn or rounding andanother nosepiece introduced in its place.

I claim as my invention- 1.- A revolving cutter-head and the frame forthe same and an inclined trough for the reception of the log to be actedupon and having a channel across the lower end of the bottom of thetrough and mortises in the sides of the trough, in combination with theremovable nose-piece filling the channel and passing through themortises, and screws for holding down the removable nosepiece,substantially as set forth.

2. The combination, in a machine for cutting logs transversely, of arevolving head with knives, a frame and j ournal-boxes for supportingthe same, an inclined trough for receiving the log to be cut, a head andbar within the trough, and teeth on the under side of the bar, and ascrew-pinion below such bar for acting direct-1y upon the teeth, a shaftfor revolving the screw-pinion, and rollers above such rack- 4 5 bar forholding the same down, substantially as set forth.

3. The rack-bar having teeth on its under surface and the screw-pinionfor moving the rack-bar endwise, in combination with the trough havinglongitudinal grooves in its inner faces, the supporting-wheels M belowthe rack and the rollersN above such rack to hold the same down, thehead P, connected to the rack and having holdfast projections 5 upon itsfront surface, and the guide-rollers 6 upon the sides of the head andwithin the longitudinal grooves in the inner faces of the trough,substantially as set forth.

Signed by me this 11th day of April, 1887. 60

- JOHN J. HAYES.

Witnesses:

E. F. AUTENRIETH, FREDRIC KNooH'E.

